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Authors
Affiliations
1 Department of Civil Engineering, National Institute of Technology, Tiruchirappalli - 620 015, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 77, No 4 (2011), Pagination: 360-366
Abstract
A broad overview of how GPS can be used to identify the active fault plane along which earthquakes occur in the seismic prone Western Maharashtra Peninsular shield of India is given. Indian Institute of Technology, Bombay in collaboration with Indian Institute of Geomagnetism, Mumbai was actively working in the field of crustal deformation monitoring along Western Maharashtra from year 2004 - 2006. A regional GPS network had been established for this purpose, periodically observed between May 2004 to May 2006, and analysed. To understand the pattern of seismicity along Western Maharashtra region, the GPS-estimated coordinates and displacements were used as an indicator to estimate and identify regions of high strain rates, the reliability of which was confirmed with real seismic data collected. These strain rates were used as a means to identify the fault plane along which the earthquakes occurred during the period of observation.
Keywords
GPS, Seismic Zones, Horizontal Strain Rates, Normal Faulting, Left Strike-Slip Faulting, Western Maharashtra.
